@Lina30, you can reach AirBnB via the Help link at bottom of this page.
Or via Facebook.
https://www.facebook.com/airbnb/?fref=ts
Or – if you have a Twitter account - try twitter@airbnbhelp. It’s said there’s a quick response.
More essential reading for hosts. Contains a link with several international phone numbers (‘How to contact AirBnB’).
https://community.airbnb.com/t5/General-Hosting/Community-Help-Guides/m-p/23100#U23100
Regarding Contact numbers in the above link, I've twice recently had quick responses via the Netherlands phone number.
(Though oddly enough, the person to whom I spoke was actually in the US.)